US4145776A - Unitary bowl, waterway and trap for a toilet, and the method of making same - Google Patents

Unitary bowl, waterway and trap for a toilet, and the method of making same Download PDF

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Publication number
US4145776A
US4145776A US05/761,743 US76174377A US4145776A US 4145776 A US4145776 A US 4145776A US 76174377 A US76174377 A US 76174377A US 4145776 A US4145776 A US 4145776A
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US
United States
Prior art keywords
bowl
waterway
trap
reference plane
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/761,743
Other languages
English (en)
Inventor
Samuel C. Crosby
Thomas M. Whitney
William F. Price
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trayco Inc
Original Assignee
Trayco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trayco Inc filed Critical Trayco Inc
Priority to US05/761,743 priority Critical patent/US4145776A/en
Priority to CA000294156A priority patent/CA1118959A/en
Priority to AR270631A priority patent/AR216665A1/es
Priority to GB647/78A priority patent/GB1595512A/en
Priority to SE7800310A priority patent/SE427125B/sv
Priority to AU32464/78A priority patent/AU521989B2/en
Priority to NL7800634A priority patent/NL7800634A/xx
Priority to NO780185A priority patent/NO780185L/no
Priority to BR7800337A priority patent/BR7800337A/pt
Priority to ES466231A priority patent/ES466231A1/es
Priority to DK30178A priority patent/DK30178A/da
Priority to IT67103/78A priority patent/IT1106988B/it
Priority to DE19782803012 priority patent/DE2803012A1/de
Priority to AT0042778A priority patent/AT363858B/de
Priority to FR7801766A priority patent/FR2378141A1/fr
Priority to MX172139A priority patent/MX149464A/es
Priority to LU78929A priority patent/LU78929A1/xx
Priority to CH68578A priority patent/CH625296A5/fr
Priority to PT67570A priority patent/PT67570B/pt
Priority to BE184556A priority patent/BE863216A/xx
Priority to FI780225A priority patent/FI66957C/fi
Priority to ES1978239738U priority patent/ES239738Y/es
Application granted granted Critical
Publication of US4145776A publication Critical patent/US4145776A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/02—Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl

Definitions

  • the present invention relates generally to a bowl, waterway and trap for a toilet and to the method of manufacture. More specifically, the bowl, waterway and trap are integral and unitary, are free of any joints, and are made in a blow molding operation from a tubular plastic parison.
  • Toilets have conventionally been made from ceramic or vitreous china in order to meet applicable codes which require several features, including the absence of joints and cracks to prevent harbors for bacteria growth.
  • up to thirteen or more components are individually made and then assembled together.
  • the assembled components are then covered with a common material to fill the joints and placed back into a kiln for a second phase of firing.
  • substantial manual labor is required in assembling the various components and then coating the assembly and substantial energy is required due to multiple passes through the kiln.
  • such toilets are not easily handled because of their weight and are subject to breakage during shipping and installation.
  • the present invention overcomes these prior art problems in an integral, unitary bowl, waterway and trap which is made of a water impervious, plastic material, preferably in a blow molding operation.
  • the bowl is concave, having an interior surface leading into a trap in the bottom of the bowl.
  • the trap includes a first end communicating with the bowl, a second end for connection to a water closet flange, and a tubular section interconnecting the two ends.
  • a waterway between the trap and bowl includes an upper inlet opening to receive water, an elongated duct sloping downwardly from the inlet and terminating in an exit opening in the lower interior of the bowl at a position above the trap inlet.
  • a wall surface in the waterway adjacent the exit opening overlies at least a portion of the downwardly sloping waterway portion to direct water in a direction along the interior surface of the bowl to establish a strong vortex during flushing.
  • the concave bowl includes a major opening at its top and a minor discharge opening at its bottom leading into the trap, with the two openings being substantially perpendicular to a reference plane through their respective midpoints.
  • the exit opening in the waterway preferably includes an outside wall defining an outer radius of a bend which constitutes the wall surface that is in overlying alignment with the downwardly sloping waterway portion.
  • An inside wall on the opposite side of the reference plane from the outside wall blends into an outwardly projecting channel formed in the interor wall of the bowl above and adjacent to the trap inlet.
  • the channel extends around approximately one-half of the interior periphery of the bowl and progressively decreases in depth, serving to direct water from the waterway around the interior surface of the bowl to assist in establishing a vortex for flushing.
  • the downwardly sloping portion of the waterway curves to assist in turning the flow of water at the waterway exit opening.
  • a tubular parison is first placed between a pair of blow mold sections.
  • the blow mold sections are closed on the parison to form a blowable shape comprising parison portions destined to form the bowl, trap and waterway, by simultaneously (1) enclosing a major part of the parison within a bulbous major part of the blow mold cavity, including the bowl for the final article, (2) pinching a portion of the parison shut along a tortuous path communicating with the major part of the blow mold cavity and conforming to the trap, and (3) pinching another portion of the parison shut along a waterway communicating with the major part of the parison between the trap and the bowl parison portions.
  • blow fluid under pressure is introduced into the interior of the parison to expand the major part of the parison into a bulbous shape including the bowl and to expand the pinched-shut parison portions respectively into a tortuous-shaped trap and a waterway.
  • the blown article is removed from the mold cavity and a series of trimming operations are performed. More specifically, the bulbous shape is trimmed along an annular line to form a concave bowl having an upper rim, the upper end of the waterway is trimmed to form an inlet, and the lower end of the trap is trimmed to form a discharge opening.
  • the trap and waterway will include fused seams which correspond to the pinch lines of the mold sections. Importantly, these fused seams do not constitute joints which foster biological growth during use of the product. Also as a result of the blow molding operation, reinforcing webs of plastic material may optionally be formed between the bowl, waterway, and trap segments.
  • the present invention relates to an integral, unitary bowl, waterway and trap providing numerous advantages over the prior art.
  • the present invention provides a product which (1) is made of a water-impervious, discoloration-resistant plastic material having an essentially smooth, slick interior surface to facilitate flushing, waste removal, and cleaning; (2) is relatively inexpensive in comparison with the prior art products; (3) is free of joints and provides no harbors for significant biological growth, thereby meeting applicable code specifications; (4) is light and is therefore easy to handle and inexpensive to ship; (5) achieves an immediate, strong vortex and siphon, thereby facilitating the removal of waste and reducing water consumption; (6) is not easily damaged during shipping and installation; and (7) conserves energy due to the manufacturing method employed.
  • FIG. 1 is a side elevational view, illustrating the integral bowl, waterway and trap as it might be assembled in combination with other components of a toilet.
  • FIG. 2 is a top plan view of the bowl, waterway, and trap, particularly illustrating the waterway and an indent in the lower portion of the bowl for facilitating the formation of a strong vortex.
  • FIG. 3 is an enlarged, fragmented, perspective view of a region of the product which corresponds to the bottom of the bowl, the outlet from the waterway, and the initial region of the trap.
  • FIG. 4 is a sectional view taken along plane 4--4 as shown in FIG. 1, illustrating the channel-shaped indent and the exit region of the waterway.
  • FIGS. 5, 6, and 7 are cross-sectional views taken along respective planes 5--5, 6--6, and 7--7, as shown in FIG. 1, illustrating the cross-sectional configuration of the trap.
  • FIGS. 8 and 9 are schematic illustrations of the mold assemblies for making the unitary bowl, waterway and trap.
  • FIGS. 10 and 11 illustrate the mold cavity configurations of the two blow mold sections.
  • FIG. 12 illustrates the blown article after removal from the blow mold sections but prior to the trimming operations.
  • FIG. 1 generally by the reference numeral 50 as including an integral, unitary bowl 60, waterway 70 and trap 80.
  • Other components of an overall toilet assembly are shown in phantom, but do not form a part of the present invention.
  • These other components include a tank or reservoir 20 which is interconnected with the upper portion of the waterway 70 by a suitable coupling 25.
  • a rim flush (not shown) delivers water from the tank 20 to the top of the bowl 60 to assist in the flushing action.
  • An outer shell or casing may include a lid 30, a separate top component 31 to cover the tank and the top of the bowl, and a separate component 32 to cover the waterway and trap.
  • a flange 33 on the lower component 32 surrounds the outlet of the trap and is surrounded by a standard water closet flange 34.
  • a standard wax seal may be used between the trap 80 and the closet flange 34.
  • a standard seat 40 may be assembled to the upper shell component 31.
  • the bowl 60 is concave in a conventional manner, including an upper opening 61 which is optionally circumscribed by a flange 62. At the other end of the bowl is an imaginary discharge opening illustrated by the phantom line and reference numeral 63, with the discharge opening leading into the trap 80.
  • the upper portion of the bowl may be described as being essentially symmetrical about a reference plane in the plane of FIG. 1, with the reference plane being essentially perpendicular to both the upper and lower openings 61 and 63.
  • FIGS. 2, 3, and 4 best illustrate a channel-shaped indent 64 which is included in the lower interior surface of the bowl above the discharge opening 63.
  • the indent extends around approximately one-half the interior periphery of the bowl and gradually decreases in depth in order to assist the formation of a water vortex during flushing.
  • FIG. 2 illustrates that the bowl may include fused seams 65 and 66 which may result when the article is formed in the preferred, disclosed blow molding operation.
  • the seams will be formed along pinch lines in the blow molding tool and will have the same thermal history as the other plastic material in the product.
  • the waterway includes an upper inlet 71 which is interconnected with a tank.
  • a downwardly sloping duct 72 extends from the inlet 71 to an exit opening 73 which blends into the channel-shaped indent 64.
  • an outside wall 74 overlies a portion of the duct 72 at the opening. This outside wall is formed essentially along a bend generated by a radius, with the wall terminating essentially on the reference plane.
  • An inside wall 75 on the other side of the reference plane from outside wall 74 blends directly into the indent. The outside wall 74, in cooperation with the inside wall 75, turns the water flow at the exit opening 73 to follow indent 64 in order to form a vortex during flushing to efficiently remove waste.
  • the duct 72 Upstream from the exit opening 73, the duct 72 preferably includes gradual curves shown by reference numerals 76 and 77. These gradual curves along the length of the duct 72 serve to impede the flow of water in order to more effectively turn the water at wall 74 to establish the desired vortex.
  • the duct 72 is at an angle with the horizontal of about 30°, and includes seam lines 78 formed as a result of the preferred blow molding operation.
  • the waterway 70 may flow directly into the trap 80 in the event that a siphon-jet action is desired.
  • the trap as best shown in FIGS. 1, 3, and 5-7, includes a first portion 81 extending upwardly from the bowl discharge region 63 to an elbow 82.
  • the elbow includes a lip 83 which establishes the water level in the bowl.
  • a second, tortuous-shaped trap portion 84 extends downwardly from the elbow to an outlet 85.
  • the cross-sectional area of the trap generally decreases from the trap inlet region to a region just upstream from the discharge 85 at about a position where section 66 is taken in trap portion 84.
  • This decrease in cross-section cooperates with the tortuous path of section 84 to impede flow of water during flushing to back the water up in the bowl in order to assist in the formation of a vortex.
  • the upwardly extending trap section 81 is generally parallel to the waterway duct 72.
  • optional reinforcing ribs 86 and 87 may extend between the sections of the trap and the waterway.
  • a similar rib of material 88 may likewise extend between the trap and the bowl, with these ribs being formed during the blow molding operation as a result of plastic material being clamped together between the blow mold sections.
  • a fused seam 89 may extend along the reference plane of the trap, likewise as a result of the blow molding operation.
  • the preferred method of making the integral bowl, waterway and trap of the present invention involves a blow molding operation which is illustrated in FIGS. 8-12.
  • This method includes, first, positioning a tubular plastic parison 100 between the sections 110 and 120 of a blow mold.
  • the parison is downwardly extruded from an extruder 112 positioned about the blow molds.
  • the plastic material is polypropylene, but may alternatively be other thermoplastic materials which will afford the previously discussed advantages of the present invention such as ABS or polyvinyl chloride.
  • a blow pin 130 is raised for insertion within the parison 100, and the blow mold sections 110 and 120 are closed by piston rods 132 and 134 of conventional hydraulic rams (not shown). Thereafter, blow air at a pressure of approximately 100 psi is injected into the interior of the parison to expand the mold-enclosed plastic material against the mold cavity surfaces to form the article 150 shown in FIG. 12. After retaining the blown article in the mold for an appropriate dwell time for cooling, on the order of about two minutes, the mold sections 110 and 120 are opened and the article 150 is ejected.
  • article 150 includes not only the integral product illustrated in FIGS. 1-7 but also includes excess peripheral plastic material 151 formed by closing the mold sections onto excess parison material. Additionally, hemispherical excess portions 152, 153, and 154 respectively adjacent the bowl portion, the inlet of the waterway, and the outlet of the trap result from the mold cavity configuration. Thus, trimming operations must ultimately be performed to remove the unnecessary plastic materials. These trimming operations will necessarily involve the removal of hemispherical portions 152, 153, and 154 and beyond that may also include the removal of the excess peripheral plastic material 151 as desired, for example to leave ribs of reinforcing material as shown by reference numerals 86, 87, and 88 in FIG. 1.
  • FIGS. 10 and 11 illustrate that the mold sections 110 and 120 are essentially identical, but differ in the region of the waterway. More specifically, the mold sections include semi-bulbous cavity portions 111 and 121 which cooperatively conform in shape to the bowl 60 and the hemispherical portion 152. Extending away from the major bulbous cavities 111 and 121 are the trap cavities 112 and 122. These trap cavities are essentially identical and conform to the shape of trap sections 81 and 84 and the hemispherical excess region 153.
  • Nonidentical waterway sections 113 and 123 extend between the trap and bulbous cavity portions and conform to the configuration of waterway 72 and the hemispherical portion 153. Cavity portion 113 includes a curved recess which forms the indent 64, whereas cavity portion 123 terminates in a mold projection 124 which forms the wall surface 74 at the end of the waterway 70.
  • the method of the present invention includes enclosing a major portion of the parison within the bulbous mold cavity. Additionally, a second portion of the parison is pinched shut along a tortuous line to conform to the trap configuration and a third portion of the parison is pinched shut to form the outline of the waterway. Since the plastic material is at a heated, formable temperature when the molds are closed, the pinch lines in the waterway and trap form seams as shown by reference numerals 78 and 89. Very importantly, the seams do not constitute joints and provide essentially smooth interior surfaces on the final product. Further, since these seams are formed during the blow molding operation, the plastic material in the seams is exposed to essentially the same thermal history as the plastic material in the other portions of the article.
  • the blow mold cavity is oriented so that the trap and waterway are at the top and the bowl is at the bottom. This is desired because the plastic parison tends to thin at the top as a result of its own weight and as a result of that portion of the parison being slightly hotter. Since it is thinner, that parison portion is preferably used to form the trap and waterway portions of the final article, where smaller blow up ratios are required.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Sanitary Device For Flush Toilet (AREA)
  • Toilet Supplies (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
  • Revetment (AREA)
US05/761,743 1977-01-24 1977-01-24 Unitary bowl, waterway and trap for a toilet, and the method of making same Expired - Lifetime US4145776A (en)

Priority Applications (22)

Application Number Priority Date Filing Date Title
US05/761,743 US4145776A (en) 1977-01-24 1977-01-24 Unitary bowl, waterway and trap for a toilet, and the method of making same
CA000294156A CA1118959A (en) 1977-01-24 1977-12-30 Unitary bowl, waterway and trap for a toilet, and the method of making same
AR270631A AR216665A1 (es) 1977-01-24 1978-01-04 Inodoro
GB647/78A GB1595512A (en) 1977-01-24 1978-01-09 Sanitary closet and method of making same
SE7800310A SE427125B (sv) 1977-01-24 1978-01-11 Toalettstolsinsats och sett att tillverka densamma
AU32464/78A AU521989B2 (en) 1977-01-24 1978-01-16 Unitary bowl, waterway and trap fora toilet
NL7800634A NL7800634A (nl) 1977-01-24 1978-01-18 Toileteenheid en werkwijze voor het vervaar- digen daarvan.
NO780185A NO780185L (no) 1977-01-24 1978-01-18 Toalettstolinnsats og fremgangsmaate for framstilling av denne
BR7800337A BR7800337A (pt) 1977-01-24 1978-01-19 Corpo de vaso,tubo de entrada de agua e sifao para vaso sanitario,inclusive processo para sua fabricacao
IT67103/78A IT1106988B (it) 1977-01-24 1978-01-20 Complesso unitario di tazza condotto d'acqua e sifone per gabinetti di toletta e procedimento per la sua fabbricazione
ES466231A ES466231A1 (es) 1977-01-24 1978-01-20 Un metodo para formar un conjunto de retrete
DE19782803012 DE2803012A1 (de) 1977-01-24 1978-01-20 Einstueckiges wasserklosett mit schuessel, spuelleitung sowie geruchverschluss und verfahren zu dessen herstellung
AT0042778A AT363858B (de) 1977-01-24 1978-01-20 Klosettbecken und verfahren zu seiner herstellung
DK30178A DK30178A (da) 1977-01-24 1978-01-20 Enhedskumme med vandledning og vandlaas til et toilet samt en fremgangsmaade til fremstilling af en saadan
MX172139A MX149464A (es) 1977-01-24 1978-01-23 Mejoras en inodoro y metodo para hacerlo
LU78929A LU78929A1 (fr) 1977-01-24 1978-01-23 Cuvette,conduit de chasse et siphon d'une seule piece pour w.c.et procede pour les fabriquer
CH68578A CH625296A5 (es) 1977-01-24 1978-01-23
FR7801766A FR2378141A1 (fr) 1977-01-24 1978-01-23 Ensemble de cuvette, d'admission d'eau et de siphon d'une seule piece pour w.-c. et procede pour sa fabrication
PT67570A PT67570B (en) 1977-01-24 1978-01-23 Unitary sowl waterway and trap for a toilet and the methodfor making the same
BE184556A BE863216A (fr) 1977-01-24 1978-01-23 Cuvette, conduit de chasse et siphon d'une seule piece pour w.c. et procede pour les fabriquer
FI780225A FI66957C (fi) 1977-01-24 1978-01-24 Toalettstolinsats och saett att tillverka densamma
ES1978239738U ES239738Y (es) 1977-01-24 1978-11-27 Conjunto de retrete.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/761,743 US4145776A (en) 1977-01-24 1977-01-24 Unitary bowl, waterway and trap for a toilet, and the method of making same

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US06/015,040 Division US4246227A (en) 1979-02-26 1979-02-26 Method of making a unitary bowl, waterway, and trap for a toilet

Publications (1)

Publication Number Publication Date
US4145776A true US4145776A (en) 1979-03-27

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ID=25063148

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/761,743 Expired - Lifetime US4145776A (en) 1977-01-24 1977-01-24 Unitary bowl, waterway and trap for a toilet, and the method of making same

Country Status (21)

Country Link
US (1) US4145776A (es)
AR (1) AR216665A1 (es)
AT (1) AT363858B (es)
AU (1) AU521989B2 (es)
BE (1) BE863216A (es)
BR (1) BR7800337A (es)
CA (1) CA1118959A (es)
CH (1) CH625296A5 (es)
DE (1) DE2803012A1 (es)
DK (1) DK30178A (es)
ES (2) ES466231A1 (es)
FI (1) FI66957C (es)
FR (1) FR2378141A1 (es)
GB (1) GB1595512A (es)
IT (1) IT1106988B (es)
LU (1) LU78929A1 (es)
MX (1) MX149464A (es)
NL (1) NL7800634A (es)
NO (1) NO780185L (es)
PT (1) PT67570B (es)
SE (1) SE427125B (es)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462124A (en) * 1981-02-09 1984-07-31 Thetford Corporation Flush apparatus for water closet and method of operation
US5054133A (en) * 1989-04-26 1991-10-08 Masco Corporatiopn Of Indiana Low water consumption toilet fixture
US5170515A (en) * 1987-09-16 1992-12-15 Toto Ltd. Water closet
US5404597A (en) * 1994-01-24 1995-04-11 Fluidmaster, Inc. Vacuum assist toilet trap
US5926863A (en) * 1993-04-06 1999-07-27 Toto Ltd. Low flush volume toilet
US6415457B2 (en) * 2000-02-08 2002-07-09 Geberit Technik Ag Flushing device for toilet system
US20040040080A1 (en) * 2002-08-30 2004-03-04 American Standard, Inc. Toilet assembly
US6715162B2 (en) 2002-08-30 2004-04-06 American Standard Inc. Toilet assembly
US20060042000A1 (en) * 2004-08-30 2006-03-02 Zajur Benjamin A Efficient water closet
US20090199332A1 (en) * 2008-02-12 2009-08-13 Mesun Randy O Toilets with Improved Trapways
US20090249537A1 (en) * 2008-04-04 2009-10-08 As Ip Holdco, L.L.C. Toilet Flush Valve
CN101518428B (zh) * 2009-03-13 2011-06-01 刘旭祥 全塑座便器
US20170114531A1 (en) * 2014-06-16 2017-04-27 Zhiqian YE Toilet with automatic urine collecting and testing function
US20170121955A1 (en) * 2015-11-03 2017-05-04 David R. Hall Modular Toilet System and Components
US9719239B2 (en) 2014-03-18 2017-08-01 Kohler India Corporation Private Limited Dual-jet toilet
CN107100247A (zh) * 2017-06-04 2017-08-29 福州百特节能科技有限公司 组合式马桶坐坑内胆
US10060113B2 (en) 2014-03-21 2018-08-28 Kohler Co. Rimless toilet
US10221553B2 (en) 2012-10-02 2019-03-05 As Ip Holdco, Llc Toilet flush valve assemblies
CN114941361A (zh) * 2022-05-05 2022-08-26 箭牌家居集团股份有限公司 一种直冲虹吸式排污结构及坐便器

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US229326A (en) * 1880-06-29 haddock
US622205A (en) * 1899-04-04 Closet
US1224734A (en) * 1916-07-24 1917-05-01 John H Gallagher Water-closet.
US1419328A (en) * 1920-06-11 1922-06-13 Teahen Water closet
US1947439A (en) * 1931-12-28 1934-02-13 Raymond E Crane Closet bowl
US3212106A (en) * 1963-07-18 1965-10-19 American Radiator & Standard Coatings
US3719209A (en) * 1970-09-23 1973-03-06 Beaton & Corbin Mfg Co Arcuate tubular articles of rigid plastic

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DE2343615A1 (de) * 1973-08-27 1975-03-13 Mannesmann Meer Ag Wasserklosettbecken aus kunststoff
NL7313864A (nl) * 1973-10-09 1975-04-11 Sba Chimie Closetpot uit kunststof.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US229326A (en) * 1880-06-29 haddock
US622205A (en) * 1899-04-04 Closet
US1224734A (en) * 1916-07-24 1917-05-01 John H Gallagher Water-closet.
US1419328A (en) * 1920-06-11 1922-06-13 Teahen Water closet
US1947439A (en) * 1931-12-28 1934-02-13 Raymond E Crane Closet bowl
US3212106A (en) * 1963-07-18 1965-10-19 American Radiator & Standard Coatings
US3719209A (en) * 1970-09-23 1973-03-06 Beaton & Corbin Mfg Co Arcuate tubular articles of rigid plastic

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462124A (en) * 1981-02-09 1984-07-31 Thetford Corporation Flush apparatus for water closet and method of operation
US5170515A (en) * 1987-09-16 1992-12-15 Toto Ltd. Water closet
US5706529A (en) * 1987-09-16 1998-01-13 Toto Ltd. Water closet
US5054133A (en) * 1989-04-26 1991-10-08 Masco Corporatiopn Of Indiana Low water consumption toilet fixture
US5926863A (en) * 1993-04-06 1999-07-27 Toto Ltd. Low flush volume toilet
US5404597A (en) * 1994-01-24 1995-04-11 Fluidmaster, Inc. Vacuum assist toilet trap
US6415457B2 (en) * 2000-02-08 2002-07-09 Geberit Technik Ag Flushing device for toilet system
US20040040080A1 (en) * 2002-08-30 2004-03-04 American Standard, Inc. Toilet assembly
US6715162B2 (en) 2002-08-30 2004-04-06 American Standard Inc. Toilet assembly
US20060042000A1 (en) * 2004-08-30 2006-03-02 Zajur Benjamin A Efficient water closet
US20090199332A1 (en) * 2008-02-12 2009-08-13 Mesun Randy O Toilets with Improved Trapways
US9353513B2 (en) 2008-02-12 2016-05-31 Kohler Co. Toilets with improved trapways
US9003575B2 (en) * 2008-02-12 2015-04-14 Kohler Co. Toilets with improved trapways
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US8266733B2 (en) 2008-04-04 2012-09-18 As Ip Holdco, Llc Toilet flush valve
CN101518428B (zh) * 2009-03-13 2011-06-01 刘旭祥 全塑座便器
US10221553B2 (en) 2012-10-02 2019-03-05 As Ip Holdco, Llc Toilet flush valve assemblies
US11008743B2 (en) 2012-10-02 2021-05-18 As America, Inc. Toilet flush valve assemblies
US9719239B2 (en) 2014-03-18 2017-08-01 Kohler India Corporation Private Limited Dual-jet toilet
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CH625296A5 (es) 1981-09-15
FI780225A (fi) 1978-07-25
SE7800310L (sv) 1978-07-25
IT1106988B (it) 1985-11-18
BR7800337A (pt) 1978-09-05
AU3246478A (en) 1979-07-26
DE2803012A1 (de) 1978-07-27
MX149464A (es) 1983-11-09
PT67570B (en) 1979-06-18
ATA42778A (de) 1981-01-15
CA1118959A (en) 1982-03-02
SE427125B (sv) 1983-03-07
DE2803012C2 (es) 1989-04-06
LU78929A1 (fr) 1978-06-09
DK30178A (da) 1978-07-25
FI66957B (fi) 1984-08-31
AT363858B (de) 1981-09-10
ES239738U (es) 1979-06-16
FR2378141B1 (es) 1983-09-23
NO780185L (no) 1978-07-25
FI66957C (fi) 1984-12-10
AR216665A1 (es) 1980-01-15
AU521989B2 (en) 1982-05-13
ES239738Y (es) 1979-12-01
ES466231A1 (es) 1979-06-01
GB1595512A (en) 1981-08-12
NL7800634A (nl) 1978-07-26
IT7867103A0 (it) 1978-01-20
FR2378141A1 (fr) 1978-08-18
PT67570A (en) 1978-02-01
BE863216A (fr) 1978-05-16

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